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Chromatographic estimation

Lazaro, E., Rafols, C., Abraham, M. H., Roses, M. Chromatographic estimation of drug disposition properties by means of immobilized artifidal membranes (lAM) and Ci8 columns. J. Med. Chem. 2006, 49, 4861 870. [Pg.433]

An official gas chromatographic method [29] is available from the determination of volatile fatty acids in sewage sludge. This method is based on gas liquid chromatographic estimation with a flame ionization detector, and is applicable up to 2000mg total volatile fatty acids per litre, while the concentrations of individual fatty acids can also be determined. Where this method is not practicable an empirical method based on the spectrophotometric determination of ferric hydroxamates can be used, giving a value for total fatty acids expressed as acetic acid. For control purposes a rapid test is described in which the volatile fatty acids are determined by electrometric titrimetry on the neutralized sludge obtained from the determination of alkalinity. [Pg.151]

G. R. Rao, S. Raghuveer, and C. M. R. Srivastava, High pressure liquid chromatographic estimation of nifedipine and its dosage forms, Indian Drugs, 22 435 (1985). [Pg.428]

Karlen et al. analyzed acetylcholine and choline by an ion pair extraction and gas phase method [134]. The gas chromatographic estimation of the isolated acetylcholine and choline was carried out after demethylation either with benzenethiolate or by controlled pyrolysis. Acetylcholine was quantitated by flame ionization detection at the nmol level. Mass fragment analysis was employed for the determination of acetylcholine in pmol amounts. [Pg.77]

In most of the work, the physicochemical behaviour of the formulations was studied by gas chromatographic estimation at intervals of the residual pheromone remaining in formulations sprayed onto filter papers. The latter were of the silicone-treated "phase-separating" type as these best simulated a leaf surface. When the formulations were exposed in a laboratory wind-tunnel there was little pheromone loss other than by release, at least for the monounsaturated acetates used in most of the preliminary work, and such analyses provided accurate information on release rates under these conditions. However, use of this technique in the field showed that loss of pheromone was very much more rapid than under comparable conditions of temperature and windspeed in the wind-tunnel (2). These results were taken to indicate that there was significant loss of pheromone by degradation under field conditions. [Pg.132]

Di-Syston was selected as the cholinesterase inhibitor for use in this study because of a suitable duration of action and because the acutely toxic but nonlethal dose has been established (2,3). Preliminary tests proved that its ethyl groups do not interfere with the gas-chromatographic estimation of acetylcholine. [Pg.89]

The chromatographic estimate of ion-pairing equilibrium constant via IPC [87,114] will be thoroughly detailed in Chapter 3 (Section 3.1.2) and will confirm that separative techniques are particularly valuable for ascertaining the nature of hydrophobic ion-pairing. [Pg.22]

A simpler desaiption of the system is desired and it can be obtained using equilibrium constants that describe aU eqnilibria in the systan obviously only a thermodynamic equilibrium constant must be made use of since, as discussed above, at variance with stoichiometric constants, they account for all the molecular level interactions in a very simple way, and notably, their chromatographic and non-chromatographic estimates can be compared to validate the retention mechanism they describe. [Pg.37]

Pitting parameters have an unambiguous physical meaning and their estimates are reliable since they compare well with literature chromatographic and non-chromatographic estimates. [Pg.45]

Naftalin, L. Quantitative Chromatographic Estimation of a-Amino Acids. [Pg.285]

Lauff JJ, Kasper ME, Ambrose RT. Quantitative liquid chromatographic estimation of bilirubin species in pathological serum. Clin Chem 1983 29 800-5,... [Pg.1205]

Al. Ackman, R. G., and Burgher, R. D., Quantitative gas liquid chromatographic estimation of volatile fatty acids in aqueous media. Anal. Chem. 35, 647-652... [Pg.297]

Adriaenssens, P. I., and Prescott, L. F. (1978). High performance liquid chromatographic estimation of paracetamol metabolites in plasma. Br. J. Clin. Pharmacol. 6, 87-88. [Pg.529]

Rosa N (1979) Pyrolysis-gas chromatographic estimation of tobacco alkaloids and neophytadiene. J Chromatogr 171 419-423... [Pg.152]

Gas-Liquid Chromatographic Estimation of Lignocaine, Ethylglycylxylidide, Glycylxylidide and 4-Hydroxyxylidine in Plasma and Urine J. Pharm. Pharmacol. 26(11) 889-893... [Pg.2]

Gss Chromatographic Estimation of Estrogens in Pregnancy Urine Trans. Meet. Int. Study Group Steroid Hormones, 2nd, Rome 1965 21-25 (Pub. 1966) CA 68 36281k... [Pg.3]

Gas Chromatographic Estimation of Halo-thane in Blood Using Electron Capture Detector Unit. [Pg.10]

Trenholm, H. L., and Wiberg, G. S. Gas Chromatographic Estimation of Ethanol, Acetaldehyde and Acetone in Ethanol Metabolism Studies Clin. Toxicol. 4(1) 99-113 (1971) ... [Pg.47]

Rapid Gas-Liquid Chromatographic Estimation of Nicotine in Biological Fluids... [Pg.79]

Gas Chromatographic Estimation of Urinary Homovanillic Acid and 4-Hydroxy-3-methoxymandelic Acid Using Capillary Columns Clin. Chim. Acta 55(1) 111-112 (1974)... [Pg.94]

Evaluation of the Gas Chromatographic Estimation of Trace Quantities of Hexachlorophene... [Pg.97]

Gas Chromatographic Estimation of Urinary 3-Methoxy-4-hydroxyphenyl-glycol as the Triacetate Clin. Chim. Acta 38(2) 413-417 (1972) CA 77 16132V... [Pg.130]

Gas Chromatographic Estimation of 3,4-Dihydroxyphenylglycol in Urine as the Diacetyl-phenyl-bis(trimethyl) silyl Ether... [Pg.130]

Gas Chromatographic Estimation of Urinary Vanillylmandelic Acid After Transformation to Vanillin Meth-oxime Trimethylsilyl Ether Clin. Chim. Acta 26(2) 307-311 (1969) CA 71 120323V... [Pg.130]

Gas Chromatographic Estimation of 3-Methoxy-4-hydroxyphenylglycol After Transformation to Vanillin Methoxime Trimethylsilyl Ether Clin. Chim. Acta 30(3) 683-687 (1970) CA 74 50376a... [Pg.130]

Gas Chromatographic Estimation of Urinary Pregnanetriol, Pregnane-triolone, and Pregnanetetrol in Congenital Hyperplasia J. Clin. Endocrinol. Metab. 26(11) 1219-1226 (1966) CA 66 27221x... [Pg.136]

Simultaneous Gas-Liquid Chromatographic Estimation of Urinary Testosterone and Epitestosterone Nippon Naibumpi Gakkai Zasshi 46(8) 908-917 (1970) CA 74 107684f... [Pg.194]

Gas Chromatographic Estimation of Acidic Urinary Metabolites After Separation on Prepacked Silica Gel Column... [Pg.195]

See other pages where Chromatographic estimation is mentioned: [Pg.351]    [Pg.301]    [Pg.301]    [Pg.301]    [Pg.189]    [Pg.463]    [Pg.112]    [Pg.189]    [Pg.205]    [Pg.207]    [Pg.290]    [Pg.85]    [Pg.161]    [Pg.187]    [Pg.37]    [Pg.40]    [Pg.76]    [Pg.136]    [Pg.150]    [Pg.166]   
See also in sourсe #XX -- [ Pg.58 ]



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